Alerts & Conditions

City of Rocks National Reserve and Castle Rocks State Park are guided by the Idaho Department of Parks and Recreation (State of Idaho) response plan to the COVID-19 pandemic. For more information about the plan, vistit the following websites:

Welcome to Idaho Rebounds: Our Path to Prosperity

Idaho Stages of Reopening

Sunrise view at City of Rocks

Conditions and Weather

You can get real-time temperature and weather conditions from the City of Rocks weather station! The weather station is located along the Visitor Center trail. It generates data that is sent to the National Oceanic and Atmospheric Administration (NOAA) - the scientific government agency that houses the National Weather Service. If you want to know what the weather is like, at least here in the Almo Valley, search for City of Rocks National Reserve on the National Weather Service website:


Outdoor recreation in City of Rocks can be pleasant from April through October, with June and September offering the most ideal weather.

Summers are generally dry with temperatures ranging from lows in the upper 40's to highs in the upper 80's, but prepare for extremes. On rare summer nights in the upper elevations temperatures can dip into the 30's. On rare occasions, the Almo Valley can experience midday highs reaching 100° F. Afternoon thunderstorms are common in the summer months (June - August).

Average winter weather includes lows in the teens and daytime highs in the 30s or 40's. Snow can accumulate up to 12-16 inches at times in the Almo Valley and several feet in the Reserve, but typically the valley snow melts to within a few inches. Drifting snow is a concern throughout the winter and may make many roads impassable. Emery pass usually remains impassable throughout the winter. Visit our Facebook Page to see updates on conditions.

Highway Conditions

Pollen Count

Last updated: March 20, 2021

Contact the Park

Mailing Address:

City of Rocks National Reserve
P.O. Box 169

Almo, ID 83312



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